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TI-2026-00438 Aliases CVE-2026-0641GHSA-cg2m-256m-59rq

TOTOLINK WA300 cstecgi.cgi sub_401510 command injection

Priority MEDIUM 57CWE-74Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-77.

Summary

A security vulnerability has been detected in TOTOLINK WA300 5.2cu.7112_B20190227. This vulnerability affects the function sub_401510 of the file cstecgi.cgi. The manipulation of the argument UPLOAD_FILENAME leads to command injection. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.02646 85th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TOTOLINKWA3005.2cu.7112_B20190227—No fix listedCNA
  • WA300 VendorTOTOLINK Affected 5.2cu.7112_B20190227 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:totolink:wa300_firmware:5.2cu.7112_b20190227:*:*:*:*:*:*:*5.2cu.7112_b20190227VulnerableTOTOLINK
cpe:2.3:h:totolink:wa300:-:*:*:*:*:*:*:*not specified by NVDRunning onTOTOLINK
  • cpe:2.3:o:totolink:wa300_firmware:5.2cu.7112_b20190227:*:*:*:*:*:*:* Versions 5.2cu.7112_b20190227 Vulnerable ·TOTOLINK
  • cpe:2.3:h:totolink:wa300:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-0641
  2. 2026-10-03 Alias added: GHSA-cg2m-256m-59rq

References

Exploit 2

Other 1

  • TI-2026-03907 Totolink WA300 cstecgi.cgi recvUpgradeNewFw os command injection CVSS 4.0MEDIUM 6.9
  • TI-2026-01817 Totolink WA300 cstecgi.cgi setAPNetwork os command injection CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences